Six years old is a little too young for that. You never truly know the reasons for the child "wanting" this. It could simply be that they truly want it, OR it could be very bad parents forcing the child to say that they want it. 6 years old is just too young.
I don't know, as a member of the LGBTQ community, I have much difficulty understanding the "T" part. I can only offer my experience. I pretty much knew my sexual preference by age 11. But at age 6??? I don't recall having the foggiest notion. I do recall that I was an effeminate child. However, if my parents had misconstrued it and went through these drastic measures to reassign my gender, I would have despised them for it. However, that is just my case.
From what I read so far in this case, it appears the child may be "gender expansive." Whatever that means. I'm not certain taking steps to force the child to be a "girl" is the called for action here.
You seem to be conflating gender assignments with sexual preferences. Gender and sexual preference are not the same thing. I think this is why you are saying 6 is too young and it is too young to be discussing sexual preferences.
If 6 was too young for gender, we would need to stop assigning gender to children at all. One thing we know for sure, is that the parents assigning gender at these "gender revels" before the child has even been born is definitely too early. It just happens to work most of the time because most people are cisgender (i think its 95%).
You are off topic on this homeschooling rant anyway, you asked how I thought best to limit extremism and I replied. Your assumptions about "religion spreading like wildefire" are based on nothing and not as much of a big deal as you think it is anyway. I might also point out just because a lot of home schooled kids have religious parents doesn't mean home schooling makes people more religious. Furthermore, who the fuck do you think you are demanding that parents submit their children to the state for indoctrination anyway? If they want to raise their children religious that is their business. People raising their children to be religious is horrible to you but mutilating the genitals of children and chemically castrating them is fine?
Every private school is evidence for what he is saying. I teach at a school where my philosophy aligns and parents seek out our school because of that. "creating global thinkers" is a big part of our mission and we don't have flags in our classrooms.
Teachers at private schools have a responsibility to teach the values of the school's mission and every mission is biased. Unbiased would be to teach the kids about abortion and concentration camps and let them decide for themselves what is right and wrong but most schools will teach it with a certain bias like "killing babies is wrong" or "telling women what to do with their bodies is wrong" and "putting a group of people in concentration camps is wrong" or "there are consequences for your actions" .
Many private school missions even have politicized language in them. Look for words like "equality" "global" "diversity" vs "individual" "successful" "productive" and you can pick up on the code. Then you also have religious rules. A teacher who is not teaching in accordance with religious rules at a religious school can be fired. Someone like you would not make long at my school even if he was teaching something like computer science that, in theory, has nothing to do with political views but in a public school, you would be protected. That is why public schools reduce extremism. They provide more balance.